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EISAI COMPLETES ACQUISITION OF MGI PHARMA

Tokyo, Japan, January 28, 2008(U.S. Time) - Թϴͷ Co., Ltd. (Tokyo, TSE 4523) (“Թϴͷ”), a research-based human health care (hhc) company, today announced the successful completion of its acquisition of MGI PHARMA, INC. (NASDAQ: MOGN) (“MGI PHARMA”) for approximately $3.9 billion through a cash tender offer followed by a short-form merger of its acquisition vehicle, Jaguar Acquisition Corp. (“Jaguar”), with and into MGI PHARMA. As a result of this acquisition, MGI PHARMA becomes a wholly-owned subsidiary of Թϴͷ Corporation of North America.

At the effective time of the merger, all outstanding shares of MGI PHARMA common stock not validly tendered and accepted for payment in the tender offer were converted into the right to receive US$41.00 per share in cash (the same price paid in the tender offer), without interest and subject to applicable withholding of taxes. Computershare, acting as the paying agent for the merger, will mail to the remaining former shareholders of MGI PHARMA materials necessary to exchange their former MGI PHARMA shares for such payment. As a result of the merger, MGI PHARMA shares will be delisted and cease to trade on the NASDAQ National Market.

About Թϴͷ Co., Ltd.

Թϴͷ Co., Ltd. is a research-based human health care (hhc) company that discovers, develops and markets products throughout the world. Թϴͷ focuses its efforts in three therapeutic areas: integrative neuroscience, including neurology and psychiatric medicines; gastrointestinal disorders; and integrative oncology, including oncotherapy and supportive-care treatments. Through a global network of research facilities, manufacturing sites and marketing affiliates, Թϴͷ actively participates in all aspects of the worldwide healthcare system.

About Թϴͷ Corporation of North America

Թϴͷ Corporation of North America is a wholly-owned subsidiary of Թϴͷ Co., Ltd. and supports the activities of its operating companies in North America. These operating companies include: Թϴͷ Research Institute of Boston, Inc., a discovery operation with strong organic chemistry capabilities; Morphotek, Inc., a biopharmaceutical company specializing in the development of therapeutic monoclonal antibodies; Թϴͷ Medical Research Inc., a clinical development group; Թϴͷ Inc., a commercial operation with manufacturing and marketing/sales functions; and Թϴͷ Machinery U.S.A., which markets and maintains pharmaceutical manufacturing machinery.

Inquiries:

In Japan

Mr. Akira Fujiyoshi
Vice President
Corporate Communications &
Investor Relations

+81-3-3817-5120

In the US

Investors:
Mr. Robert Feeney
Director, Investor and Government Relations
Թϴͷ Corporation of North America

201-746-2069

Media:
Ms. Judee Shuler
Director, Corporate Planning & Communications
Թϴͷ Corporation of North America

201-746-2241

Sard Verbinnen & Co.
Jim Barron/Susan Burns/Victoria Hofstad

212-687-8080